AD7485鈥揝PECIFICATIONS1 Parameter Specification Unit Test Conditions/Comments DYNAMIC PERFORMAN" />
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鍨嬭櫉(h脿o)锛� AD7485BSTZ
寤犲晢锛� Analog Devices Inc
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鎻忚堪锛� IC ADC 14BIT SAR 1MSPS 48-LQFP
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灏佽/澶栨锛� 48-LQFP
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 48-LQFP锛�7x7锛�
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AD7485鈥揝PECIFICATIONS1
Parameter
Specification
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
2, 3
fIN = 500 kHz Sine Wave
Signal to Noise + Distortion (SINAD)
4
76.5
dB min
78
dB typ
77
dB typ
Internal Reference
Total Harmonic Distortion (THD)
4
鈥�90
dB max
鈥�95
dB typ
鈥�92
dB typ
Internal Reference
Peak Harmonic or Spurious Noise (SFDR)
4
鈥�88
dB max
Intermodulation Distortion (IMD)
4
Second-Order Terms
鈥�96
dB typ
fIN1 = 95.053 kHz, fIN2 = 105.329 kHz
Third-Order Terms
鈥�94
dB typ
Aperture Delay
10
ns typ
Full Power Bandwidth
40
MHz typ
@ 3 dB
3.5
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
14
Bits
Integral Nonlinearity
4
卤1LSB max
卤0.5
LSB typ
Differential Nonlinearity
4
卤0.75
LSB max
Guaranteed No Missed Codes to 14 Bits
卤0.25
LSB typ
Offset Error
4
卤6LSB max
0.036
%FSR max
Gain Error
4
卤6LSB max
0.036
%FSR max
ANALOG INPUT
Input Voltage
0
V min
2.5
V max
DC Leakage Current
卤1
A max
Input Capacitance
5
35
pF typ
REFERENCE INPUT/OUTPUT
VREFIN Input Voltage
2.5
V
卤1% for Specified Performance
VREFIN Input DC Leakage Current
卤1
A max
VREFIN Input Capacitance
5
25
pF typ
VREFIN Input Current
6
220
A typ
External Reference
VREFOUT Output Voltage
2.5
V typ
VREFOUT Error @ 25
掳C
卤50
mV typ
VREFOUT Error TMIN to TMAX
卤100
mV max
VREFOUT Output Impedance
1
typ
LOGIC INPUTS
Input High Voltage, VINH
VDRIVE 鈥�1V min
Input Low Voltage, VINL
0.4
V max
Input Current, IIN
卤1
A max
Input Capacitance, CIN
5
10
pF typ
LOGIC OUTPUTS
Output High Voltage, VOH
7
0.7
脳 VDRIVE
V min
Output Low Voltage, VOL
7
0.3
脳 VDRIVE
V max
Floating-State Leakage Current
卤10
A max
Floating-State Output Capacitance
5
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
24
MCLKs
Track/Hold Acquisition Time
100
ns max
Sine Wave Input
70
ns max
Full-Scale Step Input
Throughput Rate
1
MSPS max
(VDD = 5 V
5%, AGND = DGND = 0 V, VREF = External, fSAMPLE = 1 MSPS; all specifica-
tions TMIN to TMAX and valid for VDRIVE = 2.7 V to 5.25 V, unless otherwise noted.)
A
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